<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var v1=true;
			var v2=null;
			var v3;
			var v4=Infinity;//数字
			var v5='1';
			var v6=Symbol();
		    // var v7=12345n;
			var v8=[];//object 数组
			var v9={};//object 自定义对象
			var v10=function(){};//函数
			var v11=new Object();
			var v12=0/0;//number 数字
			console.log(typeof v1);
			console.log(typeof v2);
			console.log(typeof v3);
			console.log(typeof v4);
			console.log(typeof v5);
			console.log(typeof v6);
			console.log(typeof v7);
			console.log(typeof v8);
			console.log(typeof v9);
			console.log(typeof v10);
			console.log(typeof v11);
			console.log(typeof v12);
			console.log(v8 instanceof Array)
		</script>
	</body>
</html>
